Further studies on ultrasonic contrast blood flowmetry
作者： K.K. Shung , I.Y. Kuo , R.R. Flenniken , G. Cloutier
DOI: 10.1109/ULTSYM.1990.171626
关键词:
摘要: It was demonstrated in a previous work (see IEEE Ultras. Sym. Proc., vol.2, pp.907-910, 1989) that change ultrasonic attenuation of flowing fluid as function time following bolus injection gaseous contrast agent can be used to derive mean flow rate based upon the indicator dilution principle and profile estimated using real-time B-scanner from images agent. Here, results are presented show agents may also useful for domain blood estimation via cross-correlation or dual-probe approach. Two different approaches flowmetry were studied mock loop: (1) velocity an optical correlator recorded video images, (2) two-probe arrangement cross correlation RF signals. Both methods use upstream monitoring site. >
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